On 08/26/2014 07:00 AM, Joonyoung Shim wrote:
> Hi Andrzej,
>
> On 08/22/2014 04:52 PM, Andrzej Hajda wrote:
>> In case of allocation errors some already allocated buffers
>> were not freed. The patch fixes it.
>>
>> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/exynos/exynos_drm_ipp.c | 68 ++++++++++++++++-----------------
>> 1 file changed, 33 insertions(+), 35 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
>> index 060a198..728f3b9 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
>> @@ -599,6 +599,37 @@ static int ipp_set_mem_node(struct exynos_drm_ippdrv *ippdrv,
>> return ret;
>> }
>>
>> +static int ipp_put_mem_node(struct drm_device *drm_dev,
>> + struct drm_exynos_ipp_cmd_node *c_node,
>> + struct drm_exynos_ipp_mem_node *m_node)
>> +{
>> + int i;
>> +
>> + DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
>> +
>> + if (!m_node) {
>> + DRM_ERROR("invalid dequeue node.\n");
>> + return -EFAULT;
>> + }
>> +
>> + DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
>> +
>> + /* put gem buffer */
>> + for_each_ipp_planar(i) {
>> + unsigned long handle = m_node->buf_info.handles[i];
>> + if (handle)
>> + exynos_drm_gem_put_dma_addr(drm_dev, handle,
>> + c_node->filp);
>> + }
>> +
>> + /* conditionally remove from queue */
>> + if (m_node->list.next)
> How about do INIT_LIST_HEAD for list in ipp_get_mem_node()?
I am not sure if it is better. For sure it adds unnecessary
initialization sequence.
Maybe adding list_is_initialized inline function to list.h would be the
best solution.
Regards
Andrzej
>
>> + list_del(&m_node->list);
>> + kfree(m_node);
>> +
>> + return 0;
>> +}
>> +
>> static struct drm_exynos_ipp_mem_node
>> *ipp_get_mem_node(struct drm_device *drm_dev,
>> struct drm_file *file,
>> @@ -634,7 +665,8 @@ static struct drm_exynos_ipp_mem_node
>> qbuf->handle[i], file);
>> if (IS_ERR(addr)) {
>> DRM_ERROR("failed to get addr.\n");
>> - goto err_clear;
>> + ipp_put_mem_node(drm_dev, c_node, m_node);
>> + return ERR_PTR(-EFAULT);
>> }
>>
>> buf_info->handles[i] = qbuf->handle[i];
>> @@ -649,40 +681,6 @@ static struct drm_exynos_ipp_mem_node
>> mutex_unlock(&c_node->mem_lock);
>>
>> return m_node;
>> -
>> -err_clear:
>> - kfree(m_node);
>> - return ERR_PTR(-EFAULT);
>> -}
>> -
>> -static int ipp_put_mem_node(struct drm_device *drm_dev,
>> - struct drm_exynos_ipp_cmd_node *c_node,
>> - struct drm_exynos_ipp_mem_node *m_node)
>> -{
>> - int i;
>> -
>> - DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
>> -
>> - if (!m_node) {
>> - DRM_ERROR("invalid dequeue node.\n");
>> - return -EFAULT;
>> - }
>> -
>> - DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
>> -
>> - /* put gem buffer */
>> - for_each_ipp_planar(i) {
>> - unsigned long handle = m_node->buf_info.handles[i];
>> - if (handle)
>> - exynos_drm_gem_put_dma_addr(drm_dev, handle,
>> - c_node->filp);
>> - }
>> -
>> - /* delete list in queue */
>> - list_del(&m_node->list);
>> - kfree(m_node);
>> -
>> - return 0;
>> }
>>
>> static void ipp_free_event(struct drm_pending_event *event)
>>
>
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